Is that with 11.0.1 release? Thank you. "Invalid Disk: Failed to gather policy information for the selected disk" Configuring System Integrity Protection System Integrity Protection Guide Table of Contents Introduction File System Protections Runtime Protections Kernel Extensions Configuring System Integrity Protection Revision History Very helpful Somewhat helpful Not helpful I think youll find that if you turn off or disable all macOS platform security, starting an app will get even faster, and malware will also load much more quickly too. -l In Big Sur, it becomes a last resort. Theres no encryption stage its already encrypted. SIP I understand is hugely important, and I would not dream of leaving it disabled, but SSV seems overkill for my use. Please support me on Patreon: https://www.patreon.com/roelvandepaarWith thanks & praise to God, and with . The only difference is that with a non-T2 Mac the encryption will be done behind the scenes after enabling FileVault. That said, you won't be able to change SIP settings in Startup Security Utility, because the Permissive Security option isn't available in Startup Security Utility. https://arstechnica.com/gadgets/2020/11/apple-lets-some-big-sur-network-traffic-bypass-firewalls/. No need to disable SIP. During the prerequisites, you created a new user and added that user . Restart or shut down your Mac and while starting, press Command + R key combination. BTW, I'd appreciate if someone can help to remove some files under /usr because "mount -uw" doesn't work on the "/" root directory. These options are also available: To modify or disable SIP, use the csrutil command-line tool. Not necessarily a volume group: a VG encrypts as a group, but volumes not in a group can of course be encrypted individually. https://developer.apple.com/support/downloads/Apple-File-System-Reference.pdf, macOS 11 Big Sur bezpieczniejszy: pliki systemowe podpisane - Mj Mac, macOS 11.0 Big Sur | wp, https://github.com/rickmark/mojo_thor/blob/master/SSV/mtree.i.txt, Michael Tsai - Blog - APFS and Time Machine in Big Sur, macOS 11 Big Sur Arrives Thursday, Delay Upgrades - TidBITS, Big Sur Is Here, But We Suggest You Say No Sir for Now - TidBITS, https://github.com/barrykn/big-sur-micropatcher, https://arstechnica.com/gadgets/2020/11/apple-lets-some-big-sur-network-traffic-bypass-firewalls/, https://apple.stackexchange.com/questions/410430/modify-root-filesystem-from-recovery, Updates: Sierra, High Sierra, Mojave, Catalina, Big Sur, SilentKnight, silnite, LockRattler, SystHist & Scrub, xattred, Metamer, Sandstrip & xattr tools, T2M2, Ulbow, Consolation and log utilities, Taccy, Signet, Precize, Alifix, UTIutility, Sparsity, alisma, Text Utilities: Nalaprop, Dystextia and others, Spundle, Cormorant, Stibium, Dintch, Fintch and cintch. Whatever you use to do that needs to preserve all the hashes and seal, or the volume wont be bootable. Its my computer and my responsibility to trust my own modifications. cstutil: The OS environment does not allow changing security configuration options. Mac added Signed System Volume (SSV) after Big Sur, you can disable it in recovery mode using follow command csrutil authenticated-root disable if SSV enabled, it will check file signature when boot system, and will refuse boot if you do any modify, also will cause create snapshot failed this article describe it in detail Yes, unsealing the SSV is a one-way street. Couldnt create snapshot on volume /Volumes/Macintosh HD: Operation not permitted, i have both csrutil and csrutil authenticated-root disabled. Im sure there are good reasons why it cant be as simple, but its hardly efficient. I don't know why but from beta 6 I'm not anymore able to load from that path at boot..) 4- mount / in read/write (-uw) Disable System Integrity Protection with command: csrutil disable csrutil authenticated-root disable. [] (Via The Eclectic Light Company .) You want to sell your software? Now I can mount the root partition in read and write mode (from the recovery): Run "csrutil clear" to clear the configuration, then "reboot". I dont think its novel by any means, but extremely ingenious, and I havent heard of its use in any other OS to protect the system files. Loading of kexts in Big Sur does not require a trip into recovery. Im sorry I dont know. Time Machine obviously works fine. When Authenticated Root is enabled the macOS is booted from a signed volume that is cryptographically protected to prevent tampering with the system volume. Reinstallation is then supposed to restore a sealed system again. My recovery mode also seems to be based on Catalina judging from its logo. Sure. Unfortunately this link file became a core part of the MacOS system protected by SIP after upgrading to Big Sur Dec 3, 2021 5:54 PM in response to celleo. Thank you hopefully that will solve the problems. They have more details on how the Secure Boot architecture works: Nov 24, 2021 5:24 PM in response to agou-ops, Nov 24, 2021 5:45 PM in response to Encryptor5000. (I imagine you have your hands full this week and next investigating all the big changes, so if you cant delve into this now thats certainly understandable.) In macOS Mojave 10.14, macOS boots from a single APFS volume, in which sensitive system folders and files are mixed with those which users can write to. You can run csrutil status in terminal to verify it worked. If you still cannot disable System Integrity Protection after completing the above, please let me know. So for a tiny (if that) loss of privacy, you get a strong security protection. Howard. I think this needs more testing, ideally on an internal disk. It effectively bumps you back to Catalina security levels. Its a neat system. At its native resolution, the text is very small and difficult to read. Thanks to Damien Sorresso for detailing the process of modifying the SSV, and to @afrojer in their comment below which clarifies what happens with third-party kernel extensions (corrected 1805 25 June 2020). Just be careful that some apps that automate macOS disk cloning and whatnot are not designed to handle the concept of SSV yet and will therefore not be bootable if SSV is enabled. Well, privacy goes hand in hand with security, but should always be above, like any form of freedom. Maybe when my M1 Macs arrive. Update: my suspicions were correct, mission success! It is already a read-only volume (in Catalina), only accessible from recovery! So it seems it is impossible to have an encrypted volume when SSV is disabled, which really does seem like a mistake to me, but who am I to say. . Thank you. my problem is that i cannot seem to be able to bless the partition, apparently: -bash-3.2# bless mount /Volumes/Macintosh\ HD bootefi create-snapshot Maybe I can convince everyone to switch to Linux (more likely- Windows, since people wont give up their Adobe and MicroSoft products). Im not fan of any OS (I use them all because I have to) but Privacy should always come first, no mater the price!. You drink and drive, well, you go to prison. In the end, you either trust Apple or you dont. Solved it by, at startup, hold down the option key, , until you can choose what to boot from and then click on the recovery one, should be Recovery-"version". Reduced Security: Any compatible and signed version of macOS is permitted. Howard. Of course you can modify the system as much as you like. Assuming Apple doesnt remove that functionality before release then that implies more efficient (and hopefully more reliable) TM backups. I wanted to make a thread just to raise general awareness about the dangers and caveats of modifying system files in Big Sur, since I feel this doesn't really get highlighted enough. By the way, T2 is now officially broken without the possibility of an Apple patch What definitely does get much more complex is altering anything on the SSV, because you cant simply boot your Mac from a live System volume any more: that will fail these new checks. Its up to the user to strike the balance. Apple doesnt keep any of the files which need to be mutable in the sealed System volume anyway and put significant engineering effort into ensuring that using firmlinks. Howard. However it did confuse me, too, that csrutil disable doesn't set what an end user would need. Ah, thats old news, thank you, and not even Patricks original article. ask a new question. This crypto volume crap is definitely a mouth gag for the power USER, not hackers, or malware. Since FileVault2 is handled for the whole container using the T2 I suspect, it will still work. Thank you. Thankfully, with recent Macs I dont have to engaged in all that fragile tinkering. Howard. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. Begin typing your search above and press return to search. Best regards. You cant then reseal it. If it is updated, your changes will then be blown away, and youll have to repeat the process. SIP is about much more than SIP, of course, and when you disable it, you cripple your platform security. This allows the boot disk to be unlocked at login with your password and, in emergency, to be unlocked with a 24 character recovery code. I wish you success with it. https://apple.stackexchange.com/questions/410430/modify-root-filesystem-from-recovery. Howard. I dont think youd want to do it on a whole read-write volume, like the Data volume: you can get away with this on the System volume because theres so little writing involved, so the hashes remain static almost all the time. csrutil authenticated-root disable You can then restart using the new snapshot as your System volume, and without SSV authentication. Howard. It would seem silly to me to make all of SIP hinge on SSV. No, because SIP and the security policies are intimately related, you cant AFAIK have your cake and eat it. The thing is, encrypting or making the /System read-only does not prevent malware, rogue apps or privacy invading programs. For example, when you open an app without a quarantine flag, several different parts of the security and privacy system perform checks on its signature. 1- break the seal (disable csrutil and authenticated root) 2- delete existing snapshot (s) and tag an empty one to be able to boot 3- inject the kext with opencore (not needed if you are able to load the kext from /S/L/E.. csrutil authenticated-root disable as well. Ensure that the system was booted into Recovery OS via the standard user action. There were apps (some that I unfortunately used), from the App Store, that leaked sensitive information. This will be stored in nvram. Therefore, you'll need to force it to boot into the external drive's Recovery Mode by holding "option" at boot, selecting the external disk that has Big Sur, and then immediately hitting "command + r" in just the right timing to load Big Sur's Recovery Mode.
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